Features: Ensures your environment safe with our Air Quality Detector, capable of accurately monitoring CO2 and providing data feedback for peace. Featuring a multifunctional display, this air quality tester offer easy to read information on current conditions, including CO2 concentration, with user friendly operate and alerts for any air quality abnormalities. For family concerned about indoor air quality and the health of infants, as well as office workers and students who spend extended periods in enclosed space. Perfect for continuous monitoring in various setting such as homes, offices, vehicles, ensuring that you breathe air whether at rest or work. Coupled with data storage capabilities, this air quality tester allows you to track historical air quality trend, making it a essential tool for individuals and professional alike. Specifications: Material: Plastic, Electronic Component Screen: 2.8inch Battery: 2500mAh(Include) Power: 5V1A Measurement: PM2.5: 0~1000ug/m³ TVOC: 0.00mg/m³～2.50mg/m³ Carbon dioxide: 400~5000ppm Formaldehyde: 0.00mg/m³~2.50mg/m³ Temperature: -9°C～55°C Size: About. 18.3x7.8x3.2cm/7.20x3.07x1.26in Package Includes: 1pc Air Quality Detector note: Please allow 1-2cm errors due to manual measurement. Due to difference between different monitors, the picture may not reflect the item actual color.